7-Chloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine CAS 923282-52-4

Purity 97%+In StockPharmaceutical Standards
CAS No.923282-52-4
Molecular FormulaC7H7ClN4
Molecular Weight182.61 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

7-Chloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine CAS 923282-52-4 chemical structure

Description

The occurrence of 7-Chloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine is closely related to a nitrile group, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 7-Chloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine (CAS 923282-52-4), a certified reference material (molecular formula C7H7ClN4, MW 182.61 g/mol) for analytical method development and quality control.

Owing to a nitrile group, chlorine substitution, an aromatic ring system, 7-Chloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 182.61 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), 7-Chloro-2-ethyl-2H-pyrazolo[4,3-d]pyrimidine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC7H7ClN4
Molecular Weight182.61 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentCl-containing
Nitrogen Atoms4

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